County Seal
Nassau County Home Contact Us
 
break
break
break
break
break
break
City, Town & Village Governments
New York State Government
U.S. Government
Nassau County Health Department
Breadcrumb Start you are here >Home/

APPENDIX G
WATER QUALITY MONITORING PROGRAM TO DETECT PESTICIDE CONTAMINATION
IN GROUNDWATERS OF NASSAU AND SUFFOLK COUNTIES
 
NASSAU COUNTY GOLF COURSE IRRIGATION WELLS - 2001 DATA SUMMARY

  HEMPSTEAD GARDEN CITY ROCKVILLE ROCKVILLE CHERRY GARDEN CITY ENGINEERS
  C.C. C.C. LINKS -1 LINKS -2 VALLEY C.C. G.C. C.C.
WELL NO. N-7529 N-7799 N-8881 N-6302 N-6905 N-6502 N-7664
DEPTH (ft.) 62 81 71 61 78 90 80
AQUIFER Glacial Glacial Glacial Glacial Glacial Glacial Glacial
SAMPLE DATE 7/9/2001 7/23/2001 8/6/2001 8/6/2001 8/14/2001 8/20/2001 9/10/2001
            Chlorothalonil  
SEMI-VOLATILE           (0.23) Metalaxyl
PESTICIDES (ug/l) ND ND Metalaxyl (0.21) Metalaxyl (0.18) ND Triadimefon (1.83) (0.15)
CHLORINATED   Dieldrin          
PESTICIDES (ug/l) ND (0.16ug/l) ND ND ND ND ND
EDB/DBCP (ug/l) ND ND ND ND ND ND ND
CARBAMATE              
PESTICIDES (ug/l) ND ND ND ND ND ND ND
TCPA (ug/l) ND ND ND ND ND ND 22
HERBICIDE              
METABOLITES (ug/l) ND ND ND ND ND ND ND
  ND ND ND ND ND ND TCE (1.0 )
VOLATILE ND ND ND ND ND ND PCE (170)
ORGANICS (ug/l) ND ND Toluene (1.0 ) ND ND 1,2-DCA (1.0) DCE (13)
METALS(ug/l)              
ALUMINUM 23.3 122 116 94.9 <5 <5 8.9
ANTIMONY <1 <1 <1 <1 <1 <1 <1
ARSENIC <2 <2 <2 <2 <2 <2 <2
BARIUM 87.4 52.5 59.2 58.7 69.3 60.5 47.5
BERYLLIUM <1 <1 <1 <1 <1 <1 <1
CADMIUM <1 <1 <1 <1 <1 <1 <1
CHROMIUM 8 5.4 <1 <1 2.4 2.8 3.2
COBALT <1 1.9 <1 <1 <1 <1 <1
COPPER 14.9 13.1 6.9 20.8 48.2 15 180
IRON(mg/l) 0.4 6.73 <0.1 <0.1 0.51 <0.1 <0.1
LEAD 1.6 4.2 <1 1.3 5.5 1.8 9.4
MANGANESE 9.1 314 88.9 87.5 5.9 127 6.5
MERCURY <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4
MOLYBDENUM <1 <1 <1 <1 <1 <1 <1
NICKEL 2.9 7.3 2 2.1 3.2 2.5 2.8
SELENIUM <2 <2 <2 <2 <2 <2 <2
SILVER <5 <5 <5 <5 <5 <5 <5
SODIUM  (mg/l) 35.4 22 12.8 12.8 15.3 20.9 19.2
THALLIUM <1 <1 <1 <1 <1 <1 <1
THORIUM <1 <1 <1 <1 <1 <1 <1
TITANIUM <1 3.1 <1 <1 <1 <1 <1
VANADIUM <1 <1 <1 <1 <1 <1 <1
ZINC 76.5 <50 131 73 <50 292 91.4
INORGANICS (mg/l)              
AMMONIA <0.02 0.26 <0.02 <0.02 <0.02 <0.02 <0.02
BROMIDE <0.2 <0.2 <0.2 <0.2 0.8 <0.2 <0.2
CHLORIDE 65 41 24 24 23 36 32
CONDUCTIVITY 371 239 - - - - -
FLUORIDE <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2
NITRATE 6.1 3.2 3.3 3.3 5.3 3.5 8.0
NITRITE <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
O - PHOSPHATE <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1
PH 6.1 6.3 - - - - -
SULFATE 32 20 34 34 23 33 30
PERCHLORATE (ug/l) <2 <2 <2 <2 <2 <2 <2
 
30
 

APPENDIX G
WATER QUALITY MONITORING PROGRAM TO DETECT PESTICIDE CONTAMINATION
IN GROUNDWATERS OF NASSAU AND SUFFOLK COUNTIES
NASSAU COUNTY PUBLIC SUPPLY WELLS - 2001 DATA SUMMARY
WATER SYSTEM Albertson W.D. Albertson W.D. Beaver Dam SC Bethpage W.D. Franklin Sq.WD Freeport V. Freeport V. Garden City V.
WELL NO. N-3733 N-8558 N-5672 N-9591 N-7177 N-68 N-69 N-7058
SAMPLE DATE 7/17/2001 10/15/2001 9/10/2001 9/26/2001 11/30/2001 7/23/2001 7/23/2001 9/25/2001
SEMI-VOLATILE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
CHLORINATED                
PESTICIDES (ug/l) ND   ND ND ND ND ND ND
EDB/DBCP (ug/l) ND ND ND ND ND ND ND ND
CARBAMATE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
TCPA (ug/l) ND ND ND ND ND ND ND ND
HERBICIDE                
METABOLITES (ug/l) ND ND ND ND ND ND ND ND
  1,1,1-TCA (0.6)       1,1,1-TCA (5)      
  TCE (1)       TCE (77)      
VOLATILE PCE (0.9)       Freon (7)     TCE (34)
ORGANICS (ug/l) 1,1-DCE (0.5) Chloroform (2) ND ND 1,1-DCE (4) ND ND PCE (110)
METALS(ug/l)              
ALUMINUM 35 <5 5.8 12.2 <5 57.6 51 <5
ANTIMONY <1 <1 <1 <1 <1 <1 <1 <1
ARSENIC <2 <2 <2 <2 <2 <2 <2 <2
BARIUM 2.7 2.4 7.9 <1 1.3 2 1.4 2.2
BERYLLIUM <1 <1 <1 <1 <1 <1 <1 <1
CADMIUM <1 <1 <1 <1 <1 <1 <1 <1
CHROMIUM 1.8 2.7 2.9 <1 1.2 1.7 1.5 2
COBALT <1 <1 <1 <1 1.5 <1 <1 <1
COPPER 7.2 11.1 15.1 29.4 8.8 40 73.9 11.9
IRON (mg/l) <0.1 <0.1 0.33 <0.1 <0.1 0.3 0.4 <0.1
LEAD 1.1 <1 2.3 2.2 <1 <1 <1 <1
MANGANESE 2.7 <1 16.7 2.2 2.3 3.5 3.8 <1
MERCURY <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4
MOLYBDENUM <1 <1 <1 <1 <1 <1 <1 <1
NICKEL 3 2.6 1.8 <1 1.2 1.3 1.6 2.5
SELENIUM 3 <2 <2 <2 <2 <2 <2 <2
SILVER <5 <5 <5 <5 <5 <5 <5 <5
SODIUM (mg/l) 6.6 10.1 5.5 3 6.7 3.7 3.7 8.2
THALLIUM <1 <1 <1 <1 <1 <1 <1 <1
THORIUM <1 <1 <1 <1 <1 <1 <1 <1
TITANIUM <1 3.1 <1 <1 <1 <1 <1 <1
VANADIUM <1 <1 <1 <1 <1 <1 <1 <1
ZINC <50 <50 <50 <50 <50 <50 <50 <50
INORGANICS (mg/l)  
AMMONIA <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
BROMIDE <0.2 <0.2 <0.2 <0.2 0.8 <0.2 <0.2 <0.2
CHLORIDE 10 15 7 4 11 6 5 10
CONDUCTIVITY 103 - - - 429 37 37 -
FLUORIDE <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2
NITRATE 2.5 3 2.5 1.2 0.8 <0.2 <0.2 5.2
NITRITE <0.02 0.03 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
O - PHOSPHATE <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1
PH 6 - - - 6.3 4.8 5 -
SULFATE 9 14 17 <4 19 <4 <4 7
PERCHLORATE (ug/l) <2 <2 <2 3 <2 <2 <2 3
WATER SYSTEM Garden City V. Garden City V. Garden City V. Garden City Pk Garden City Pk Glen Cove C Glen Cove C Glen Cove C
WELL NO. N-8339 N-1697 N-5163 N-10612 N-10612 N-9210 N-9211 N-9334
SAMPLE DATE 9/25/2001 9/25/2001 9/25/2001 7/17/2001 12/17/2001 8/6/2001 8/6/2001 8/6/2001
SEMI-VOLATILE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
CHLORINATED                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
EDB/DBCP (ug/l) ND ND ND ND ND ND DBCP (0.11) ND
CARBAMATE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
TCPA (ug/l) ND ND ND 7 5 ND 17 ND
HERBICIDE             Desethyl-  
METABOLITES (ug/l) ND ND ND ND ND ND atrazine-.05 ND
              1,1-DCA(2)  
      1,1,1-TCA (2)       111-TCA(1)  
  1,2-DCP(0.8)   TCE (51)       TCE (1)  
  TCE (78)   PCE (18)       PCE (1)  
VOLATILE PCE (130) TCE (1) cis12-DCE(.6)       cis-DCE(3)  
ORGANICS (ug/l) cis12-DCE(.8) PCE (0.7) 1,1-DCE (3) PCE (0.6) PCE (0.7) ND 1,1-DCE(.5) 1,1,1-TCA(.8)
METALS (ug/l)              
ALUMINUM 9.7 22.6 6.3 <5 5.3 <5 <5 20
ANTIMONY <1 <1 <1 <1 <1 <1 <1 <1
ARSENIC <2 <2 <2 <2 <2 <2 <2 <2
BARIUM 2.8 4.1 3.8 18.5 21.1 18.3 18.5 29.5
BERYLLIUM <1 <1 <1 <1 <1 <1 <1 <1
CADMIUM <1 <1 <1 <1 <1 <1 <1 <1
CHROMIUM 4.1 3.1 3.2 2.7 3.7 <1 <1 1
COBALT <1 3.2 <1 <1 <1 <1 <1 <1
COPPER 18.1 50.2 27 3.4 2.8 2.8 4.7 4.5
IRON (mg/l) <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1
LEAD 3.9 2.9 <1 <1 <1 <1 <1 1.1
MANGANESE 2.8 6.7 1.6 <1 <1 <1 <1 14.6
MERCURY <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4
MOLYBDENUM <1 <1 <1 <1 <1 <1 <1 <1
NICKEL 4.8 4.5 2.4 4.2 2.9 <1 <1 2.1
SELENIUM <2 <2 <2 2.7 <2 <2 <2 <2
SILVER <5 <5 <5 <5 <5 <5 <5 <5
SODIUM (mg/l) 13.6 9.4 14.5 13.6 13.1 12.9 16.3 13.6
THALLIUM <1 <1 <1 <1 <1 <1 <1 <1
THORIUM <1 <1 <1 <1 <1 <1 <1 <1
TITANIUM <1 3.1 <1 <1 <1 <1 <1 1.5
VANADIUM <1 <1 <1 <1 <1 <1 <1 <1
ZINC 56.2 65.8 <50 <50 <50 <50 <50 80
INORGANICS (mg/l)  
AMMONIA <0.02 0.26 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
BROMIDE <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2
CHLORIDE 28 18 32 30 29 26 34 21
CONDUCTIVITY - - - 314 305 - - -
FLUORIDE <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2
NITRATE 4 2.1 5.4 4.8 <0.2 3.3 5.9 5.9
NITRITE <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
O - PHOSPHATE <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1
PH - - - 6.4 6.5 - - -
SULFATE 28 8 12 39 38 18 26 31
PERCHLORATE (ug/l) <2 <2 <2 <2 <2 <2 <2 3
WATER SYSTEM Locust Valley WD LI Water Corp. LI Water Corp. LI Water Corp. LI Water Corp. Man-Lakeville Man-Lakeville Man-Lakeville
WELL NO. N-118 N-1346 N-4393 N-7548 N-5145 N-3523 N-7747 N-12801
SAMPLE DATE 8/21/2001 8/21/2001 10/31/2001 10/31/2001 10/31/2001 8/14/2001 8/14/2001 11/14/2001
SEMI-VOLATILE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
CHLORINATED                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
EDB/DBCP (ug/l) ND ND ND ND ND ND ND ND
CARBAMATE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
TCPA (ug/l) ND ND ND ND ND ND ND ND
HERBICIDE                
METABOLITES (ug/l) ND ND ND ND ND ND ND ND
            1,1-DCA (3)    
            1,1,1-TCA (2)    
            TCE (0.7)    
VOLATILE   TCE (1)       PCE (2)    
ORGANICS (ug/l) ND PCE (10) ND ND ND cis-1,2-DCE (2) ND ND
METALS (ug/l)                
ALUMINUM <5 6 <5 6.1 <5 <5 5.5 <5
ANTIMONY <1 <1 <1 <1 <1 <1 <1 <1
ARSENIC <2 <2 <2 <2 <2 <2 <2 <2
BARIUM 28.8 10.2 1.1 2.3 2.9 27.2 7.5 2
BERYLLIUM <1 <1 <1 <1 <1 <1 <1 <1
CADMIUM <1 <1 <1 <1 <1 <1 <1 <1
CHROMIUM 1.4 1.4 <1 <1 1.3 8 2.1 <1
COBALT <1 1.7 <1 1.2 3.4 <1 <1 <1
COPPER 10 6 10 28.2 3.4 8 4.9 4.9
IRON (mg/l) <0.1 4.19 <0.1 1.24 1.12 <0.1 <0.1 <0.1
LEAD <1 <1 <1 <1 <1 <1 1.4 1.6
MANGANESE 3.5 142 4 48 31.6 <1 1 1.5
MERCURY <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4
MOLYBDENUM <1 <1 <1 <1 <1 <1 <1 <1
NICKEL 1.1 2.4 <1 1.7 3.2 3.6 1.9 4.6
SELENIUM <2 <2 <2 <2 <2 <2 <2 <2
SILVER <5 <5 <5 <5 <5 <5 <5 <5
SODIUM (mg/l) 5.6 7.9 3.5 6.8 9.5 14.4 6.3 2.8
THALLIUM <1 <1 <1 <1 <1 <1 <1 <1
THORIUM <1 <1 <1 <1 <1 <1 <1 <1
TITANIUM <1 <1 <1 <1 1.2 <1 <1 <1
VANADIUM <1 <1 <1 <1 <1 1.5 1 <1
ZINC <50 <50 <50 <50 <50 <50 <50 <50
INORGANICS (mg/l)  
AMMONIA <0.02 0.06 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
BROMIDE <0.2 <0.2 <0.2 <0.2 <0.2 - - <0.2
CHLORIDE 8 16 5 9 11 - - 3
CONDUCTIVITY - - 45 134 189 - - 44
FLUORIDE <.2 <.2 <.2 <.2 <.2 - - <.2
NITRATE 2.1 <0.2 <0.2 <0.2 <0.2 9.8 - <0.2
NITRITE <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
O - PHOSPHATE <0.1 <0.1 <0.1 <0.1 <0.1 - <0.1 <0.1
PH - - 5.7 5.8 5.7 - - 6.1
SULFATE 5 13 7 36 59 - - 6
PERCHLORATE (ug/l) <2 <2 <2 <2 <2 <2 <2 <2
WATER SYSTEM Massapequa WD Massapequa WD NY Water Serv. NY Water Serv. NY Water Serv. Oyster Bay WD Port Wash WD Port Wash WD
WELL NO. N-6867 N-6866 N-10195 N-9514 N-3895 N-585 N-1715 N-6087
SAMPLE DATE 11/30/2001 11/30/2001 1/9/2002 1/9/2002 1/9/2002 9/10/2001 7/17/2001 7/17/2001
SEMI-VOLATILE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
CHLORINATED                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
EDB/DBCP (ug/l) ND ND ND ND ND ND ND ND
CARBAMATE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
TCPA (ug/l) ND ND ND ND ND ND ND ND
HERBICIDE                
METABOLITES (ug/l) ND ND ND ND ND ND ND ND
                 
VOLATILE                
ORGANICS (ug/l) ND ND ND ND ND ND ND MTBE (4)
METALS (ug/l)                
ALUMINUM 25.7 10.4 33.8 35.7 9.3 <5 <5 11.5
ANTIMONY <1 <1 <1 <1 <1 <1 <1 <1
ARSENIC <2 <2 <2 <2 <2 <2 <2 <2
BARIUM <1 <1 2.3 <1 <1 6.6 12.3 29.7
BERYLLIUM <1 <1 <1 <1 <1 <1 <1 <1
CADMIUM <1 <1 <1 <1 <1 <1 <1 <1
CHROMIUM 1.1 1.2 <1 <1 <1 1.4 1.2 2.3
COBALT 1.3 <1 2.2 2.1 <1 <1 <1 <1
COPPER 18.7 16.9 7.3 30.1 2 32.8 3.1 3
IRON (mg/l) 0.31 0.51 0.9 0.23 0.28 <0.1 <0.1 <0.1
LEAD 1.4 7 4.2 <1 <1 1.1 <1 <1
MANGANESE 5.5 4.6 6.1 5.4 1.9 <1 <1 <1
MERCURY <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4
MOLYBDENUM <1 <1 <1 <1 <1 <1 <1 <1
NICKEL 2.2 <1 2.3 1.8 <1 <1 1 2.1
SELENIUM <2 <2 <2 <2 <2 <2 2.5 <2
SILVER <5 <5 <5 <5 <5 <5 <5 <5
SODIUM (mg/l) 2.4 2.2 4.9 3.2 2.8 5.3 4.9 19.1
THALLIUM <1 <1 <1 <1 <1 <1 <1 <1
THORIUM <1 <1 <1 <1 <1 <1 <1 <1
TITANIUM <1 <1 <1 <1 <1 <1 <1 1
VANADIUM <1 <1 <1 <1 <1 <1 1 <1
ZINC <50 <50 <50 <50 <50 <50 <50 <50
INORGANICS (mg/l)  
AMMONIA <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
BROMIDE <0.2 <0.2 <0.2 <0.2 <0.2 <0.02 <0.02 <0.2
CHLORIDE 4 <2 6 3 9 7 7 37
CONDUCTIVITY 41 23 49 30 25 - - 330
FLUORIDE <.2 <.2 <.2 <.2 <.2 <.2 <.2 <.2
NITRATE <0.2 <0.2 <0.2 <0.2 <0.2 2.7 0.8 4.3
NITRITE <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
O - PHOSPHATE <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1
PH 4.9 5.2 5.7 5.4 5.2 - - 6.5
SULFATE 5 <4 5 <4 4 10 5 29
PERCHLORATE (ug/l) <2 - <2 <2 <2 <2 <2 <2
WATER SYSTEM Port Wash WD Port Wash WD Rockville Cen. V Rockville Cen. V Roslyn W.D. Roslyn W.D. Roslyn W.D. Roslyn W.D.
WELL NO. N-7552 N-7551 N-8217 N-8216 N-7873 N-8010 N-8010 N-1870
SAMPLE DATE 7/17/2001 11/14/2001 7/23/2001 7/23/2001 8/14/2001 8/14/2001 11/14/2001 11/14/2001
SEMI-VOLATILE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
CHLORINATED                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
EDB/DBCP (ug/l) ND ND ND ND ND EDB (0.07) EDB (0.07) ND
CARBAMATE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
TCPA (ug/l) ND ND ND ND ND ND ND ND
HERBICIDE                
METABOLITES (ug/l) ND ND ND ND ND ND ND ND
  1,1,1-TCA (5)         1,1-DCA (2)    
  TCE (3)         111-TCA (.8) 1,1-DCA (2)  
VOLATILE PCE (41)         TCE (0.6) 111TCA(.8)  
ORGANICS (ug/l) 1,1-DCE (6) PCE (2) ND Chloroform (1) ND PCE (0.5) TCE (0.5) PCE (1)
METALS (ug/l)                
ALUMINUM 10 <5 168 187 16.8 <5 <5 <5
ANTIMONY <1 <1 <1 <1 <1 <1 <1 <1
ARSENIC <2 <2 <2 <2 <2 <2 <2 <2
BARIUM 24.5 24.8 6.8 3.9 6.4 19 17.5 2.9
BERYLLIUM <1 <1 <1 <1 <1 <1 <1 <1
CADMIUM <1 <1 <1 <1 <1 <1 <1 <1
CHROMIUM 2.3 2.4 3.5 1.6 1.2 3 2 1.2
COBALT <1 <1 5.2 3.1 <1 <1 <1 <1
COPPER 7.9 5.1 25.1 21.2 215 17.5 23.3 3.94
IRON (mg/l) <0.1 <0.1 1.38 <0.1 <0.1 <0.1 <0.1 <0.1
LEAD <1 <1 <1 1 1.5 2.2 2.2 1.6
MANGANESE 1.5 <1 28.7 21.4 3.1 <1 <1 1.8
MERCURY <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4
MOLYBDENUM <1 <1 <1 <1 <1 <1 <1 <1
NICKEL 2.4 2.2 13.2 3.7 1 1.8 1.2 9.5
SELENIUM 3.2 <2 <2 <2 <2 <2 2.5 <2
SILVER <5 <5 <5 <5 <5 <5 <5 <5
SODIUM (mg/l) 16.5 12.5 8.6 5.1 3.3 21.1 21.4 6.8
THALLIUM <1 <1 <1 <1 <1 <1 <1 <1
THORIUM <1 <1 <1 <1 <1 <1 <1 <1
TITANIUM <1 <1 <1 <1 <1 <1 <1 1
VANADIUM <1 <1 1.6 <1 <1 <1 1 <1
ZINC <50 <50 <50 <50 71.2 80.2 77 <50
INORGANICS (mg/l)  
AMMONIA <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
BROMIDE <0.2 <0.2 <0.2 <0.2 <0.2 - <0.02 <0.2
CHLORIDE 37 36 16 8 5 - 42 8
CONDUCTIVITY 268 231 93 67 - - 272 85
FLUORIDE <.2 <.2 <.2 <.2 <.2 - <.2 <.2
NITRATE 6.0 3.9 <0.2 <0.2 1.4 5.9 6.0 3.7
NITRITE <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
O - PHOSPHATE <0.1 <0.1 <0.1 <0.1 <0.1 - <0.1 <0.1
PH 6.2 6.1 4.8 5.2 - - 5.9 6.0
SULFATE 19 15 12 12 <4 - 19 <4
PERCHLORATE (ug/l) <2 <2 <2 <2 <2 2 <2 <2
WATER SYSTEM Sands Point V Sands Point V Sands Point V Sands Point V Sands Point V So.Farm WD So.Farm WD Town of Hemp.
WELL NO. N-9446 N-37 N-12639 N-7157 N-4389 N-7516 N-7515 N-7957
SAMPLE DATE 8/1/2001 8/1/2001 8/1/2001 8/1/2001 8/1/2001 12/17/2001 12/17/2001 8/21/2001
SEMI-VOLATILE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
CHLORINATED                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
EDB/DBCP (ug/l) ND ND ND ND ND ND ND ND
CARBAMATE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
TCPA (ug/l) ND 7 10 ND ND ND ND ND
HERBICIDE                
METABOLITES (ug/l) ND ND ND ND ND ND ND ND
                DCDFM (2)
                TCE (10)
                PCE (5)
VOLATILE               cis-12-DCE(4)
ORGANICS (ug/l) ND ND MTBE (0.5) MTBE (2) MTBE (0.8) ND ND 1,1-DCE (2)
METALS (ug/l)              
ALUMINUM <5 <5 <5 <5 10.4 26 332 <5
ANTIMONY <1 <1 <1 <1 <1 <1 <1 <1
ARSENIC <2 <2 <2 <2 <2 <2 <2 <2
BARIUM 29 48.2 31.4 23.6 19.7 1.1 6.2 8.1
BERYLLIUM <1 <1 <1 <1 <1 <1 <1 <1
CADMIUM <1 <1 <1 <1 <1 <1 <1 <1
CHROMIUM 1.9 4.1 3.7 2.9 3.3 <1 1.7 1.3
COBALT <1 <1 <1 3.1 <1 <1 8.1 <1
COPPER <1 6 4.3 15.4 20.1 14.6 26.6 7.8
IRON (mg/l) <0.1 <0.1 <0.1 <0.1 <0.1 0.82 1 <0.1
LEAD <1 <1 <1 <1 <1 3.9 <1 <1
MANGANESE 316 9.9 45.2 21.7 43 8.3 26.5 3.4
MERCURY <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4
MOLYBDENUM 1 <1 <1 <1 <1 <1 <1 <1
NICKEL <1 10.4 7.6 3.4 3.4 1.2 6.7 3.7
SELENIUM <2 <2 <2 <2 <2 <2 <2 <2
SILVER <5 <5 <5 <5 <5 <5 <5 <5
SODIUM  (mg/l) 6.5 17.4 12.4 6.9 9.1 2.1 6.8 7.5
THALLIUM <1 <1 <1 <1 <1 <1 <1 <1
THORIUM <1 <1 <1 <1 <1 <1 <1 <1
TITANIUM <1 <1 <1 <1 <1 <1 <1 1
VANADIUM <1 <1 <1 1 1 <1 <1 <1
ZINC <50 <50 <50 <50 <50 <50 <50 <50
INORGANICS (mg/l)  
AMMONIA <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
BROMIDE <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2
CHLORIDE 5 36 23 9 11 10 3 9
CONDUCTIVITY - - - - - 79 24 -
FLUORIDE <.2 <.2 <.2 <.2 <.2 <.2 <.2 <.2
NITRATE 6.0 3.9 <0.2 <0.2 1.4 5.9 6.0 3.7
NITRITE <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
O - PHOSPHATE <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1
PH - - - - - 4.4 5.1 -
SULFATE 14 41 42 23 34 13 4 <4
PERCHLORATE (ug/l) <2 <2 <2 <2 <2 <2 <2 <2
WATER SYSTEM Town of Hemp Town of Hemp W. Nassau WA W. Nassau WA W. Nassau WA W. Nass WA W.Nassau WA W.Nassau WA
WELL NO. N-8956 N-8957 N-14 N-4077 N-4077 N-5155 N-2414 N-7650
DEPTH (ft.) 530 584 110 150 150 90 88 440
AQUIFER Magothy Magothy Glacial Glacial Glacial Glacial Glacial Magothy
SAMPLE DATE 1/9/2002 1/9/2002 7/9/2001 7/9/2001 11/30/2001 7/9/2001 7/9/2001 10/2/2001
SEMI-VOLATILE                
PESTICIDES (ug/l) ND ND ND Prometon(.12) Prometon(.15) ND ND ND
CHLORINATED                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
EDB/DBCP (ug/l) ND ND ND ND ND ND ND ND
CARBAMATE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
TCPA (ug/l) ND ND ND ND ND ND ND ND
HERBICIDE                
METABOLITES (ug/l) ND ND ND ND ND ND ND ND
  1,1-DCE (11) 1,1,1-TCA (2)           Vinyl Cl2 (1)
  1,1,1-TCA(9) TCE (46)           TCE (25)
  Car. Tetra (14) PCE (7)           PCE (5)
VOLATILE TCE (53) cis12-DCE (1)           cis12-DCE(3)
ORGANICS (ug/l) PCE (17) 1,1-DCE (3) MTBE (1) MTBE (0.7) ND MTBE (0.7) ND 1,1-DCA (.8)
METALS (ug/l)              
ALUMINUM <5 <5 17.3 <5 <5 <5 <5 <5
ANTIMONY <1 <1 <1 <1 <1 <1 <1 <1
ARSENIC <2 <2 <2 <2 <2 <2 <2 <2
BARIUM 14 3.7 81.6 20.6 62 37.5 32.4 4.4
BERYLLIUM <1 <1 <1 <1 <1 <1 <1 <1
CADMIUM <1 <1 <1 <1 <1 <1 <1 <1
CHROMIUM <1 <1 3.9 2.7 2.4 1.9 2 5.7
COBALT <1 <1 <1 3.1 <1 <1 <1 <1
COPPER 16.2 8.4 28.4 6.1 7.8 69.9 49.6 5.7
IRON (mg/l) <0.1 <0.1 0.24 <0.1 <0.1 <0.1 <0.1 <0.1
LEAD 1.4 <1 <1 <1 <1 3.9 <1 <1
MANGANESE <1 <1 8.1 113 1130 2 2 1.6
MERCURY <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4
MOLYBDENUM 1 <1 <1 <1 <1 <1 <1 <1
NICKEL <1 <1 3.8 1.1 1.1 2.8 1.5 2.6
SELENIUM <2 <2 <2 <2 <2 <2 <2 <2
SILVER <5 <5 <5 <5 <5 <5 <5 <5
SODIUM (mg/l) 10.6 5.7 34.1 33.3 51 18 12.7 17.5
THALLIUM <1 <1 <1 <1 <1 <1 <1 <1
THORIUM <1 <1 <1 <1 <1 <1 <1 <1
TITANIUM <1 <1 1.7 <1 <1 <1 <1 1
VANADIUM <1 <1 <1 1 1 <1 <1 1.3
ZINC <50 <50 69.2 <50 <50 <50 <50 <50
INORGANICS (mg/l)  
AMMONIA <0.02 <0.02 <0.02 0.28 0.51 <0.02 <0.02 <0.02
BROMIDE <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2
CHLORIDE 17 9 63 51 129 30 19  
CONDUCTIVITY 138 63 376 251 429 228 167 -
FLUORIDE <.2 <.2 <.2 <.2 <.2 - <.2 <.2
NITRATE 7.4 2.4 5.7 <0.2 <0.2 4.9 3.5 3.7
NITRITE <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
O - PHOSPHATE <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1
PH 5.7 6.0 6.0 6.5 6.3 6.3 6.0 -
SULFATE <4 <4 40 <4 4 26 22  
PERCHLORATE (ug/l) 6 2 <2 <2 - <2 <2 <2
                 
WATER SYSTEM West. Nassau WA West. Nassau WA West Hemp. WD West Hemp. WD West Hemp. WD
WELL NO. N-7649 N-4298 N-3704 N-10401 N-9492
SAMPLE DATE 10/2/2001 11/30/2001 10/3/2001 10/3/2001 10/3/2001
SEMI-VOLATILE          
PESTICIDES (ug/l) ND ND Atrazine (.19) ND ND
CHLORINATED          
PESTICIDES (ug/l) ND ND ND ND ND
EDB/DBCP (ug/l) ND ND ND ND ND
CARBAMATE          
PESTICIDES (ug/l) ND ND ND ND ND
TCPA (ug/l) ND ND 6 7 ND
HERBICIDE          
METABOLITES (ug/l) ND ND ND ND ND
  TCE (130) CDFM (1)      
  PCE (32) 1,1,1-TCA (1)   Chloroform(1)  
  cis12-DCE(11) TCE (8) CDFM (1) CDBM (1)  
VOLATILE 1,1-DCE (8) PCE (26) Chloroform(3) Bromoform (.5)  
ORGANICS (ug/l) MTBE (0.9) MTBE (0.5) PCE (2) BDCM (1) ND
ALUMINUM <5 <5 127 8.3 154
ANTIMONY <1 <1 <1 <1 <1
ARSENIC <2 <2 <2 <2 <2
BARIUM 4.2 23.7 53.4 37.4 1.3
BERYLLIUM <1 <1 <1 <1 <1
CADMIUM <1 <1 <1 <1 <1
CHROMIUM 6.1 2.5 2.9 1.6 1.9
COBALT <1 <1 5.6 3.4 1.9
COPPER 13.9 14.1 11.2 3.1 20.7
IRON (mg/l) <0.1 <0.1 1.53 0.1 0.78
LEAD <1 <1 1.4 <1 2.3
MANGANESE 2.5 1.8 86.9 17.4 24.7
MERCURY <0.4 <0.4 <0.4 <0.4 <0.4
MOLYBDENUM <1 <1 <1 <1 <1
NICKEL 2 <1 6.7 9.9 2.8
SELENIUM <2 <2 <2 <2 <2
SILVER <5 <5 <5 <5 <5
SODIUM (mg/l) 20.3 22 13.7 18.4 4
THALLIUM <1 <1 <1 <1 <1
THORIUM <1 <1 <1 <1 <1
TITANIUM <1 <1 3.3 1.7 4.3
VANADIUM 1.4 <1 1.1 <1 <1
ZINC <50 <50 <50 <50 <50
INORGANICS (mg/l)
AMMONIA <0.02 <0.02 <0.02 <0.02 <0.02
BROMIDE <0.2 <0.2 <0.2 <0.2 <0.2
CHLORIDE 41      
CONDUCTIVITY 252    
FLUORIDE <.2 <.2 <.2 <.2 <.2
NITRATE 3.7      
NITRITE <0.02 <0.02      
O - PHOSPHATE <0.1 <0.1 <0.1 <0.1 <0.1
PH   5.9      
SULFATE   19      
PERCHLORATE (ug/l)   -      

NASSAU COUNTY DEPARTMENT OF HEALTH
BUREAU OF ENVIRONMENTAL PROTECTION
WATER QUALITY MONITORING PROGRAM TO DETECT PESTICIDE CONTAMINATION
IN GROUNDWATERS OF NASSAU AND SUFFOLK COUNTIES
NASSAU COUNTY PUBLIC SUPPLY WELLS - 2001 DATA SUMMARY
Albertson W.D. Albertson W.D. Beaver Dam SC Bethpage W.D. Franklin Sq.WD Freeport V. Freeport V. Garden City V.
WELL NO. N-3733 N-8558 N-5672 N-9591 N-7177 N-68 N-69 N-7058
DEPTH (ft.) 450 410 121 682 486 500 494 440
AQUIFER Magothy Magothy Magothy Magothy Magothy Magothy Magothy Magothy
SAMPLE DATE 7/17/2001 10/15/2001 9/10/2001 9/26/2001 11/30/2001 7/23/2001 7/23/2001 9/25/2001
SEMI-VOLATILE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
CHLORINATED                
PESTICIDES (ug/l) ND   ND ND ND ND ND ND
EDB/DBCP (ug/l) ND ND ND ND ND ND ND ND
CARBAMATE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
TCPA (ug/l) ND ND ND ND ND ND ND ND
HERBICIDE                
METABOLITES (ug/l) ND ND ND ND ND ND ND ND
  1,1,1-TCA (0.6)       1,1,1-TCA (5)      
  TCE (1)       TCE (77)      
VOLATILE PCE (0.9)       Freon (7)     TCE (34)
ORGANICS (ug/l) 1,1-DCE (0.5) Chloroform (2) ND ND 1,1-DCE (4) ND ND PCE (110)
METALS  (ug/l)                
ALUMINUM 35 <5 5.8 12.2 <5 57.6 51 <5
ANTIMONY <1 <1 <1 <1 <1 <1 <1 <1
ARSENIC <2 <2 <2 <2 <2 <2 <2 <2
BARIUM 2.7 2.4 7.9 <1 1.3 2 1.4 2.2
BERYLLIUM <1 <1 <1 <1 <1 <1 <1 <1
CADMIUM <1 <1 <1 <1 <1 <1 <1 <1
CHROMIUM 1.8 2.7 2.9 <1 1.2 1.7 1.5 2
COBALT <1 <1 <1 <1 1.5 <1 <1 <1
ND - Not Detected
NASSAU COUNTY DEPARTMENT OF HEALTH
BUREAU OF ENVIRONMENTAL PROTECTION
WATER QUALITY MONITORING PROGRAM TO DETECT PESTICIDE CONTAMINATION
IN GROUNDWATERS OF NASSAU AND SUFFOLK COUNTIES
NASSAU COUNTY PUBLIC SUPPLY WELLS - 2001 DATA SUMMARY
WATER SYSTEM Albertson W.D. Albertson W.D. Beaver Dam SC Bethpage W.D. Franklin Sq.WD Freeport V. Freeport V. Garden City V.
WELL NO. N-3733 N-8558 N-5672 N-9591 N-7177 N-68 N-69 N-7058
COPPER 7.2 11.1 15.1 29.4 8.8 40 73.9 11.9
IRON  (mg/l) <0.1 <0.1 0.33 <0.1 <0.1 0.3 0.4 <0.1
LEAD 1.1 <1 2.3 2.2 <1 <1 <1 <1
MANGANESE 2.7 <1 16.7 2.2 2.3 3.5 3.8 <1
MERCURY <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4
MOLYBDENUM <1 <1 <1 <1 <1 <1 <1 <1
NICKEL 3 2.6 1.8 <1 1.2 1.3 1.6 2.5
SELENIUM 3 <2 <2 <2 <2 <2 <2 <2
SILVER <5 <5 <5 <5 <5 <5 <5 <5
SODIUM  (mg/l) 6.6 10.1 5.5 3 6.7 3.7 3.7 8.2
THALLIUM <1 <1 <1 <1 <1 <1 <1 <1
THORIUM <1 <1 <1 <1 <1 <1 <1 <1
TITANIUM <1 3.1 <1 <1 <1 <1 <1 <1
VANADIUM <1 <1 <1 <1 <1 <1 <1 <1
ZINC <50 <50 <50 <50 <50 <50 <50 <50
INORGANICS (mg/l)    
AMMONIA <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
BROMIDE <0.2 <0.2 <0.2 <0.2 0.8 <0.2 <0.2 <0.2
CHLORIDE 10 15 7 4 11 6 5 10
CONDUCTIVITY 103 - - - 429 37 37 -
FLUORIDE <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2
NITRATE 2.5 3 2.5 1.2 0.8 <0.2 <0.2 5.2
NITRITE <0.02 0.03 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
O - PHOSPHATE <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1
PH 6 - - - 6.3 4.8 5 -
SULFATE 9 14 17 <4 19 <4 <4 7
PERCHLORATE (ug/l) <2 <2 <2 <2 <2 <2 <2
NASSAU COUNTY DEPARTMENT OF HEALTH
BUREAU OF ENVIRONMENTAL PROTECTION
WATER QUALITY MONITORING PROGRAM TO DETECT PESTICIDE CONTAMINATION
IN GROUNDWATERS OF NASSAU AND SUFFOLK COUNTIES
NASSAU COUNTY PUBLIC SUPPLY WELLS - 2001 DATA SUMMARY
WATER SYSTEM Garden City V. Garden City V. Garden City V. Garden City Pk Garden City Pk Glen Cove C Glen Cove C Glen Cove C
WELL NO. N-8339 N-1697 N-5163 N-10612 N-10612 N-9210 N-9211 N-9334
DEPTH (ft.) 358 518 475 400 400 275 269 298
AQUIFER Magothy Magothy Magothy Magothy Magothy Magothy Magothy Magothy
SAMPLE DATE 9/25/2001 9/25/2001 9/25/2001 7/17/2001 12/17/2001 8/6/2001 8/6/2001 8/6/2001
SEMI-VOLATILE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
CHLORINATED                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
EDB/DBCP (ug/l) ND ND ND ND ND ND ND ND
CARBAMATE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
TCPA (ug/l) ND ND ND 7 5 ND 17 ND
HERBICIDE             Desethyl-  
METABOLITES (ug/l) ND ND ND ND ND ND atrazine-.05 ND
              1,1-DCA(2)  
      1,1,1-TCA (2)       111-TCA(1)  
  1,2-DCP(0.8)   TCE (51)       TCE (1)  
  TCE (78)   PCE (18)       PCE (1)  
VOLATILE PCE (130) TCE (1) cis12-DCE(.6)       cis-DCE(3)  
ORGANICS (ug/l) cis12-DCE(.8) PCE (0.7) 1,1-DCE (3) PCE (0.6) PCE (0.7) ND 1,1-DCE(.5) 1,1,1-TCA(.8)
METALS  (ug/l)                
ALUMINUM 9.7 22.6 6.3 <5 5.3 <5 <5 20
ANTIMONY <1 <1 <1 <1 <1 <1 <1 <1
ARSENIC <2 <2 <2 <2 <2 <2 <2 <2
BARIUM 2.8 4.1 3.8 18.5 21.1 18.3 18.5 29.5
BERYLLIUM <1 <1 <1 <1 <1 <1 <1 <1
CADMIUM <1 <1 <1 <1 <1 <1 <1 <1
CHROMIUM 4.1 3.1 3.2 2.7 3.7 <1 <1 1
COBALT <1 3.2 <1 <1 <1 <1 <1 <1
NASSAU COUNTY DEPARTMENT OF HEALTH
BUREAU OF ENVIRONMENTAL PROTECTION
WATER QUALITY MONITORING PROGRAM TO DETECT PESTICIDE CONTAMINATION
IN GROUNDWATERS OF NASSAU AND SUFFOLK COUNTIES
NASSAU COUNTY PUBLIC SUPPLY WELLS - 2001 DATA SUMMARY
WATER SYSTEM Garden City V. Garden City V. Garden City V. Garden City Pk Garden City Pk Glen Cove C Glen Cove C Glen Cove C
WELL NO. N-8339 N-1697 N-5163 N-10612 N-10612 N-9210 N-9211 N-9334
COPPER 18.1 50.2 27 3.4 2.8 2.8 4.7 4.5
IRON  (mg/l) <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1
LEAD 3.9 2.9 <1 <1 <1 <1 <1 1.1
MANGANESE 2.8 6.7 1.6 <1 <1 <1 <1 14.6
MERCURY <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4
MOLYBDENUM <1 <1 <1 <1 <1 <1 <1 <1
NICKEL 4.8 4.5 2.4 4.2 2.9 <1 <1 2.1
SELENIUM <2 <2 <2 2.7 <2 <2 <2 <2
SILVER <5 <5 <5 <5 <5 <5 <5 <5
SODIUM  (mg/l) 13.6 9.4 14.5 13.6 13.1 12.9 16.3 13.6
THALLIUM <1 <1 <1 <1 <1 <1 <1 <1
THORIUM <1 <1 <1 <1 <1 <1 <1 <1
TITANIUM <1 3.1 <1 <1 <1 <1 <1 1.5
VANADIUM <1 <1 <1 <1 <1 <1 <1 <1
ZINC 56.2 65.8 <50 <50 <50 <50 <50 80
INORGANICS (mg/l)    
AMMONIA <0.02 0.26 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
BROMIDE <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2
CHLORIDE 28 18 32 30 29 26 34 21
CONDUCTIVITY - - - 314 305 - - -
FLUORIDE <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2
NITRATE 4 2.1 5.4 4.8 <0.2 3.3 5.9 5.9
NITRITE <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
O - PHOSPHATE <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1
PH - - - 6.4 6.5 - - -
SULFATE 28 8 12 39 38 18 26 31
PERCHLORATE (ug/l) <2 <2 <2 <2 <2 <2 <2 3
NASSAU COUNTY DEPARTMENT OF HEALTH
BUREAU OF ENVIRONMENTAL PROTECTION
WATER QUALITY MONITORING PROGRAM TO DETECT PESTICIDE CONTAMINATION
IN GROUNDWATERS OF NASSAU AND SUFFOLK COUNTIES
NASSAU COUNTY PUBLIC SUPPLY WELLS - 2001 DATA SUMMARY
WATER SYSTEM Hempstead V. Hempstead V. Hicksville WD Hicksville WD Hicksville WD Hicksville WD Jericho WD Locust Valley
WELL NO. N-81 N-82 N-3953 N-3878 N-8778 N-8779 N-6093 N-119
DEPTH (ft.) 420 542 419 428 590 585 606 571
AQUIFER Magothy Magothy Magothy Magothy Magothy Magothy Magothy Lloyd
SAMPLE DATE 12/17/2001 12/17/2001 10/15/2001 10/15/2001 10/31/2001 10/31/2001 10/15/2001 8/21/2001
                 
SEMI-VOLATILE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
CHLORINATED                
PESTICIDES (ug/l) ND   ND ND ND ND ND ND
EDB/DBCP (ug/l) ND ND ND ND ND ND ND ND
CARBAMATE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
TCPA (ug/l) ND ND ND ND ND ND ND ND
HERBICIDE                
METABOLITES (ug/l) ND ND ND ND ND ND ND ND
            Chlorodifluoro-    
    TCE (4)     1,1-DCA (0.9) methane(4)    
VOLATILE Chlorodifluoro- PCE (0.6)     TCE (20) 1,1-DCA (2)    
ORGANICS (ug/l) methane(4) 1,1-DCE (0.6) ND ND Freon 113 (1) 1,1-DCE(.5) ND 1,1-DCA (0.6)
METALS  (ug/l)                
ALUMINUM 33.8 <5 <5 <5 44.8 <5 <5 15
ANTIMONY <1 <1 <1 <1 <1 <1 <1 <1
ARSENIC <2 <2 <2 <2 <2 <2 <2 <2
BARIUM 4.5 1.1 1.6 10.1 6.4 10.7 5.7 54.5
BERYLLIUM <1 <1 <1 <1 <1 <1 <1 <1
CADMIUM <1 <1 <1 <1 <1 <1 <1 <1
CHROMIUM 1.3 1.1 <1 <1 <1 1.7 1.1 3
COBALT 7.7 <1 <1 <1 <1 1.9 1.4 <1
NASSAU COUNTY DEPARTMENT OF HEALTH
BUREAU OF ENVIRONMENTAL PROTECTION
WATER QUALITY MONITORING PROGRAM TO DETECT PESTICIDE CONTAMINATION
IN GROUNDWATERS OF NASSAU AND SUFFOLK COUNTIES
NASSAU COUNTY PUBLIC SUPPLY WELLS - 2001 DATA SUMMARY
WATER SYSTEM Hempstead V. Hempstead V. Hicksville WD Hicksville WD Hicksville WD Hicksville WD Jericho WD Locust Valley WD
WELL NO. N-81 N-82 N-3953 N-3878 N-8778 N-8779 N-6093 N-119
COPPER 13.7 59.4 6.5 9.8 12.6 33.1 17.1 47.3
IRON  (mg/l) 0.95 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1
LEAD <1 <1 <1 1.8 2.2 3.9 <1 1
MANGANESE 9.6 <1 <1 <1 5.1 2 1.4 9.4
MERCURY <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4
MOLYBDENUM <1 <1 <1 <1 <1 <1 <1 <1
NICKEL 7.6 1.2 <1 1 2.2 3.5 3.5 1.5
SELENIUM <2 <2 <2 <2 <2 <2 <2 <2
SILVER <5 <5 <5 <5 <5 <5 <5 <5
SODIUM  (mg/l) 9.5 4.8 4 6.4 7.3 14.8 4.3 8.5
THALLIUM <1 <1 <1 <1 <1 <1 <1 <1
THORIUM <1 <1 <1 <1 <1 <1 <1 <1
TITANIUM <1 <1 <1 <1 <1 <1 <1 <1
VANADIUM <1 <1 <1 <1 <1 <1 <1 <1
ZINC <50 <50 <50 <50 109 <50 <50 <50
INORGANICS (mg/l)  
AMMONIA <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
BROMIDE <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2
CHLORIDE 23 7 5 9 9 24 <4 12
CONDUCTIVITY 117 59 - - - 149 - -
FLUORIDE <.2 <.2 <.2 <.2 <.2 <.2 <.2 <.2
NITRATE <.2 <.2 0.9 5.3 4.3 5.1 2.1 4
NITRITE <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
O - PHOSPHATE <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 - <0.1
PH 5.2 5.7 - - 5.7 5.5 - -
SULFATE 12 <4 <4 <4 <4 6 <4 8
PERCHLORATE (ug/l) <2 <2 <2 5 2 <2 2 <2
NASSAU COUNTY DEPARTMENT OF HEALTH
BUREAU OF ENVIRONMENTAL PROTECTION
WATER QUALITY MONITORING PROGRAM TO DETECT PESTICIDE CONTAMINATION
IN GROUNDWATERS OF NASSAU AND SUFFOLK COUNTIES
NASSAU COUNTY PUBLIC SUPPLY WELLS - 2001 DATA SUMMARY
WATER SYSTEM Locust Valley WD LI Water Corp. LI Water Corp. LI Water Corp. LI Water Corp. Man-Lakeville Man-Lakeville Man-Lakeville
WELL NO. N-118 N-1346 N-4393 N-7548 N-5145 N-3523 N-7747 N-12801
DEPTH (ft.) 471 160 472 511 460 320 138 567
AQUIFER Lloyd Glacial Magothy Magothy Magothy Magothy Glacial Lloyd
SAMPLE DATE 8/21/2001 8/21/2001 10/31/2001 10/31/2001 10/31/2001 8/14/2001 8/14/2001 11/14/2001
SEMI-VOLATILE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
CHLORINATED                
PESTICIDES (ug/l) ND   ND ND ND ND ND ND
EDB/DBCP (ug/l) ND ND ND ND ND ND ND ND
CARBAMATE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
TCPA (ug/l) ND ND ND ND ND ND ND ND
HERBICIDE                
METABOLITES (ug/l) ND ND ND ND ND ND ND ND
            1,1-DCA (3)    
            1,1,1-TCA (2)    
            TCE (0.7)    
VOLATILE   TCE (1)       PCE (2)    
ORGANICS (ug/l) ND PCE (10) ND ND ND cis-1,2-DCE (2) ND ND
METALS  (ug/l)                
ALUMINUM <5 6 <5 6.1 <5 <5 5.5 <5
ANTIMONY <1 <1 <1 <1 <1 <1 <1 <1
ARSENIC <2 <2 <2 <2 <2 <2 <2 <2
BARIUM 28.8 10.2 1.1 2.3 2.9 27.2 7.5 2
BERYLLIUM <1 <1 <1 <1 <1 <1 <1 <1
CADMIUM <1 <1 <1 <1 <1 <1 <1 <1
CHROMIUM 1.4 1.4 <1 <1 1.3 8 2.1 <1
COBALT <1 1.7 <1 1.2 3.4 <1 <1 <1
NASSAU COUNTY DEPARTMENT OF HEALTH
BUREAU OF ENVIRONMENTAL PROTECTION
WATER QUALITY MONITORING PROGRAM TO DETECT PESTICIDE CONTAMINATION
IN GROUNDWATERS OF NASSAU AND SUFFOLK COUNTIES
NASSAU COUNTY PUBLIC SUPPLY WELLS - 2001 DATA SUMMARY
WATER SYSTEM Locust Valley WD LI Water Corp. LI Water Corp. LI Water Corp. LI Water Corp. Man-Lakeville Man-Lakeville Man-Lakeville
WELL NO. N-118 N-1346 N-4393 N-7548 N-5145 N-3523 N-7747 N-12801
COPPER 10 6 10 28.2 3.4 8 4.9 4.9
IRON  (mg/l) <0.1 4.19 <0.1 1.24 1.12 <0.1 <0.1 <0.1
LEAD <1 <1 <1 <1 <1 <1 1.4 1.6
MANGANESE 3.5 142 4 48 31.6 <1 1 1.5
MERCURY <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4
MOLYBDENUM <1 <1 <1 <1 <1 <1 <1 <1
NICKEL 1.1 2.4 <1 1.7 3.2 3.6 1.9 4.6
SELENIUM <2 <2 <2 <2 <2 <2 <2 <2
SILVER <5 <5 <5 <5 <5 <5 <5 <5
SODIUM  (mg/l) 5.6 7.9 3.5 6.8 9.5 14.4 6.3 2.8
THALLIUM <1 <1 <1 <1 <1 <1 <1 <1
THORIUM <1 <1 <1 <1 <1 <1 <1 <1
TITANIUM <1 <1 <1 <1 1.2 <1 <1 <1
VANADIUM <1 <1 <1 <1 <1 1.5 1 <1
ZINC <50 <50 <50 <50 <50 <50 <50 <50
INORGANICS (mg/l)  
AMMONIA <0.02 0.06 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
BROMIDE <0.2 <0.2 <0.2 <0.2 <0.2 - - <0.2
CHLORIDE 8 16 5 9 11 - - 3
CONDUCTIVITY - - 45 134 189 - - 44
FLUORIDE <.2 <.2 <.2 <.2 <.2 - - <.2
NITRATE 2.1 <0.2 <0.2 <0.2 <0.2 9.8 - <0.2
NITRITE <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
O - PHOSPHATE <0.1 <0.1 <0.1 <0.1 <0.1 - <0.1 <0.1
PH - - 5.7 5.8 5.7 - - 6.1
SULFATE 5 13 7 36 59 - - 6
PERCHLORATE (ug/l) <2 <2 <2 <2 <2 <2 <2 <2
NASSAU COUNTY DEPARTMENT OF HEALTH
BUREAU OF ENVIRONMENTAL PROTECTION
WATER QUALITY MONITORING PROGRAM TO DETECT PESTICIDE CONTAMINATION
IN GROUNDWATERS OF NASSAU AND SUFFOLK COUNTIES
NASSAU COUNTY PUBLIC SUPPLY WELLS - 2001 DATA SUMMARY
WATER SYSTEM Massapequa WD Massapequa WD NY Water Serv. NY Water Serv. NY Water Serv. Oyster Bay WD Port Wash WD Port Wash WD
WELL NO. N-6867 N-6866 N-10195 N-9514 N-3895 N-585 N-1715 N-6087
DEPTH (ft.) 492 626 585 660 349 77 480 92
AQUIFER Magothy Magothy Magothy Magothy Magothy Glacial Lloyd Glacial
SAMPLE DATE 11/30/2001 11/30/2001 1/9/2002 1/9/2002 1/9/2002 9/10/2001 7/17/2001 7/17/2001
SEMI-VOLATILE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
CHLORINATED                
PESTICIDES (ug/l) ND   ND ND ND ND ND ND
EDB/DBCP (ug/l) ND ND ND ND ND ND ND ND
CARBAMATE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
TCPA (ug/l) ND ND ND ND ND ND ND ND
HERBICIDE                
METABOLITES (ug/l) ND ND ND ND ND ND ND ND
                 
VOLATILE                
ORGANICS (ug/l) ND ND ND ND ND ND ND MTBE (4)
METALS  (ug/l)                
ALUMINUM 25.7 10.4 33.8 35.7 9.3 <5 <5 11.5
ANTIMONY <1 <1 <1 <1 <1 <1 <1 <1
ARSENIC <2 <2 <2 <2 <2 <2 <2 <2
BARIUM <1 <1 2.3 <1 <1 6.6 12.3 29.7
BERYLLIUM <1 <1 <1 <1 <1 <1 <1 <1
CADMIUM <1 <1 <1 <1 <1 <1 <1 <1
CHROMIUM 1.1 1.2 <1 <1 <1 1.4 1.2 2.3
COBALT 1.3 <1 2.2 2.1 <1 <1 <1 <1
NASSAU COUNTY DEPARTMENT OF HEALTH
BUREAU OF ENVIRONMENTAL PROTECTION
WATER QUALITY MONITORING PROGRAM TO DETECT PESTICIDE CONTAMINATION
IN GROUNDWATERS OF NASSAU AND SUFFOLK COUNTIES
NASSAU COUNTY PUBLIC SUPPLY WELLS - 2001 DATA SUMMARY
WATER SYSTEM Massapequa WD Massapequa WD NY Water Serv. NY Water Serv. NY Water Serv. Oyster Bay WD Port Wash WD Port Wash WD
WELL NO. N-6867 N-6866 N-10195 N-9514 N-3895 N-585 N-1715 N-6087
COPPER 18.7 16.9 7.3 30.1 2 32.8 3.1 3
IRON  (mg/l) 0.31 0.51 0.9 0.23 0.28 <0.1 <0.1 <0.1
LEAD 1.4 7 4.2 <1 <1 1.1 <1 <1
MANGANESE 5.5 4.6 6.1 5.4 1.9 <1 <1 <1
MERCURY <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4
MOLYBDENUM <1 <1 <1 <1 <1 <1 <1 <1
NICKEL 2.2 <1 2.3 1.8 <1 <1 1 2.1
SELENIUM <2 <2 <2 <2 <2 <2 2.5 <2
SILVER <5 <5 <5 <5 <5 <5 <5 <5
SODIUM  (mg/l) 2.4 2.2 4.9 3.2 2.8 5.3 4.9 19.1
THALLIUM <1 <1 <1 <1 <1 <1 <1 <1
THORIUM <1 <1 <1 <1 <1 <1 <1 <1
TITANIUM <1 <1 <1 <1 <1 <1 <1 1
VANADIUM <1 <1 <1 <1 <1 <1 1 <1
ZINC <50 <50 <50 <50 <50 <50 <50 <50
INORGANICS (mg/l)  
AMMONIA <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
BROMIDE <0.2 <0.2 <0.2 <0.2 <0.2 <0.02 <0.02 <0.2
CHLORIDE 4 <2 6 3 9 7 7 37
CONDUCTIVITY 41 23 49 30 25 - - 330
FLUORIDE <.2 <.2 <.2 <.2 <.2 <.2 <.2 <.2
NITRATE <0.2 <0.2 <0.2 <0.2 <0.2 2.7 0.8 4.3
NITRITE <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
O - PHOSPHATE <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1
PH 4.9 5.2 5.7 5.4 5.2 - - 6.5
SULFATE 5 <4 5 <4 4 10 5 29
PERCHLORATE (ug/l) <2 - <2 <2 <2 <2 <2 <2
NASSAU COUNTY DEPARTMENT OF HEALTH
BUREAU OF ENVIRONMENTAL PROTECTION
WATER QUALITY MONITORING PROGRAM TO DETECT PESTICIDE CONTAMINATION
IN GROUNDWATERS OF NASSAU AND SUFFOLK COUNTIES
NASSAU COUNTY PUBLIC SUPPLY WELLS - 2001 DATA SUMMARY
WATER SYSTEM Port Wash WD Port Wash WD Rockville Cent. V Rockville Cent. V Roslyn W.D. Roslyn W.D. Roslyn W.D. Roslyn W.D.
WELL NO. N-7552 N-7551 N-8217 N-8216 N-7873 N-8010 N-8010 N-1870
DEPTH (ft.) 454 469 503 460 530 448 448 260
AQUIFER Magothy Magothy Magothy Magothy Magothy Glacial Lloyd Glacial
SAMPLE DATE 7/17/2001 11/14/2001 7/23/2001 7/23/2001 8/14/2001 8/14/2001 11/14/2001 11/14/2001
SEMI-VOLATILE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
CHLORINATED                
PESTICIDES (ug/l) ND   ND ND ND ND ND ND
EDB/DBCP (ug/l) ND ND ND ND ND EDB (0.07) EDB (0.07) ND
CARBAMATE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
TCPA (ug/l) ND ND ND ND ND ND ND ND
HERBICIDE                
METABOLITES (ug/l) ND ND ND ND ND ND ND ND
  1,1,1-TCA (5)         1,1-DCA (2)    
  TCE (3)         111-TCA (.8) 1,1-DCA (2)  
VOLATILE PCE (41)         TCE (0.6) 111TCA(.8)  
ORGANICS (ug/l) 1,1-DCE (6) PCE (2) ND Chloroform (1) ND PCE (0.5) TCE (0.5) PCE (1)
METALS  (ug/l)                
ALUMINUM 10 <5 168 187 16.8 <5 <5 <5
ANTIMONY <1 <1 <1 <1 <1 <1 <1 <1
ARSENIC <2 <2 <2 <2 <2 <2 <2 <2
BARIUM 24.5 24.8 6.8 3.9 6.4 19 17.5 2.9
BERYLLIUM <1 <1 <1 <1 <1 <1 <1 <1
CADMIUM <1 <1 <1 <1 <1 <1 <1 <1
CHROMIUM 2.3 2.4 3.5 1.6 1.2 3 2 1.2
COBALT <1 <1 5.2 3.1 <1 <1 <1 <1
NASSAU COUNTY DEPARTMENT OF HEALTH
BUREAU OF ENVIRONMENTAL PROTECTION
WATER QUALITY MONITORING PROGRAM TO DETECT PESTICIDE CONTAMINATION
IN GROUNDWATERS OF NASSAU AND SUFFOLK COUNTIES
NASSAU COUNTY PUBLIC SUPPLY WELLS - 2001 DATA SUMMARY
WATER SYSTEM Port Wash WD Port Wash WD Rockville Cent. V Rockville Cent. V Roslyn W.D. Roslyn W.D. Roslyn W.D. Roslyn W.D.
WELL NO. N-7552 N-7551 N-8217 N-8216 N-7873 N-8010 N-8010 N-1870
COPPER 7.9 5.1 25.1 21.2 215 17.5 23.3 3.94
IRON  (mg/l) <0.1 <0.1 1.38 <0.1 <0.1 <0.1 <0.1 <0.1
LEAD <1 <1 <1 1 1.5 2.2 2.2 1.6
MANGANESE 1.5 <1 28.7 21.4 3.1 <1 <1 1.8
MERCURY <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4
MOLYBDENUM <1 <1 <1 <1 <1 <1 <1 <1
NICKEL 2.4 2.2 13.2 3.7 1 1.8 1.2 9.5
SELENIUM 3.2 <2 <2 <2 <2 <2 2.5 <2
SILVER <5 <5 <5 <5 <5 <5 <5 <5
SODIUM  (mg/l) 16.5 12.5 8.6 5.1 3.3 21.1 21.4 6.8
THALLIUM <1 <1 <1 <1 <1 <1 <1 <1
THORIUM <1 <1 <1 <1 <1 <1 <1 <1
TITANIUM <1 <1 <1 <1 <1 <1 <1 1
VANADIUM <1 <1 1.6 <1 <1 <1 1 <1
ZINC <50 <50 <50 <50 71.2 80.2 77 <50
INORGANICS (mg/l)  
AMMONIA <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
BROMIDE <0.2 <0.2 <0.2 <0.2 <0.2 - <0.02 <0.2
CHLORIDE 37 36 16 8 5 - 42 8
CONDUCTIVITY 268 231 93 67 - - 272 85
FLUORIDE <.2 <.2 <.2 <.2 <.2 - <.2 <.2
NITRATE 6.0 3.9 <0.2 <0.2 1.4 5.9 6.0 3.7
NITRITE <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
O - PHOSPHATE <0.1 <0.1 <0.1 <0.1 <0.1 - <0.1 <0.1
PH 6.2 6.1 4.8 5.2 - - 5.9 6.0
SULFATE 19 15 12 12 <4 - 19 <4
PERCHLORATE (ug/l) <2 <2 <2 <2 <2 2 <2 <2
NASSAU COUNTY DEPARTMENT OF HEALTH
BUREAU OF ENVIRONMENTAL PROTECTION
WATER QUALITY MONITORING PROGRAM TO DETECT PESTICIDE CONTAMINATION
IN GROUNDWATERS OF NASSAU AND SUFFOLK COUNTIES
NASSAU COUNTY PUBLIC SUPPLY WELLS - 2001 DATA SUMMARY
WATER SYSTEM Sands Point V Sands Point V Sands Point V Sands Point V Sands Point V So.Farm WD So.Farm WD Town of Hemp.
WELL NO. N-9446 N-37 N-12639 N-7157 N-4389 N-7516 N-7515 N-7957
DEPTH (ft.) 368 140 165 240 225 584 347 519
AQUIFER Lloyd Glacial Glacial Magothy Magothy Magothy Magothy Magothy
SAMPLE DATE 8/1/2001 8/1/2001 8/1/2001 8/1/2001 8/1/2001 12/17/2001 12/17/2001 8/21/2001
SEMI-VOLATILE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
CHLORINATED                
PESTICIDES (ug/l) ND   ND ND ND ND ND ND
EDB/DBCP (ug/l) ND ND ND ND ND EDB (0.07) EDB (0.07) ND
CARBAMATE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
TCPA (ug/l) ND 7 10 ND ND ND ND ND
HERBICIDE                
METABOLITES (ug/l) ND ND ND ND ND ND ND ND
                DCDFM (2)
                TCE (10)
                PCE (5)
VOLATILE               cis-12-DCE(4)
ORGANICS (ug/l) ND ND MTBE (0.5) MTBE (2) MTBE (0.8) ND ND 1,1-DCE (2)
METALS  (ug/l)              
ALUMINUM <5 <5 <5 <5 10.4 26 332 <5
ANTIMONY <1 <1 <1 <1 <1 <1 <1 <1
ARSENIC <2 <2 <2 <2 <2 <2 <2 <2
BARIUM 29 48.2 31.4 23.6 19.7 1.1 6.2 8.1
BERYLLIUM <1 <1 <1 <1 <1 <1 <1 <1
CADMIUM <1 <1 <1 <1 <1 <1 <1 <1
CHROMIUM 1.9 4.1 3.7 2.9 3.3 <1 1.7 1.3
COBALT <1 <1 <1 3.1 <1 <1 8.1 <1
NASSAU COUNTY DEPARTMENT OF HEALTH
BUREAU OF ENVIRONMENTAL PROTECTION
WATER QUALITY MONITORING PROGRAM TO DETECT PESTICIDE CONTAMINATION
IN GROUNDWATERS OF NASSAU AND SUFFOLK COUNTIES
NASSAU COUNTY PUBLIC SUPPLY WELLS - 2001 DATA SUMMARY
WATER SYSTEM Sands Point V Sands Point V Sands Point V Sands Point V Sands Point V So.Farm WD So.Farm WD Town of Hemp.
WELL NO. N-9446 N-37 N-12639 N-7157 N-4389 N-7516 N-7515 N-7957
COPPER <1 6 4.3 15.4 20.1 14.6 26.6 7.8
IRON  (mg/l) <0.1 <0.1 <0.1 <0.1 <0.1 0.82 1 <0.1
LEAD <1 <1 <1 <1 <1 3.9 <1 <1
MANGANESE 316 9.9 45.2 21.7 43 8.3 26.5 3.4
MERCURY <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4
MOLYBDENUM 1 <1 <1 <1 <1 <1 <1 <1
NICKEL <1 10.4 7.6 3.4 3.4 1.2 6.7 3.7
SELENIUM <2 <2 <2 <2 <2 <2 <2 <2
SILVER <5 <5 <5 <5 <5 <5 <5 <5
SODIUM  (mg/l) 6.5 17.4 12.4 6.9 9.1 2.1 6.8 7.5
THALLIUM <1 <1 <1 <1 <1 <1 <1 <1
THORIUM <1 <1 <1 <1 <1 <1 <1 <1
TITANIUM <1 <1 <1 <1 <1 <1 <1 1
VANADIUM <1 <1 <1 1 1 <1 <1 <1
ZINC <50 <50 <50 <50 <50 <50 <50 <50
INORGANICS (mg/l)  
AMMONIA <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
BROMIDE <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2
CHLORIDE 5 36 23 9 11 10 3 9
CONDUCTIVITY - - - - - 79 24 -
FLUORIDE <.2 <.2 <.2 <.2 <.2 <.2 <.2 <.2
NITRATE 6.0 3.9 <0.2 <0.2 1.4 5.9 6.0 3.7
NITRITE <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
O - PHOSPHATE <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1
PH - - - - - 4.4 5.1 -
SULFATE 14 41 42 23 34 13 4 <4
PERCHLORATE (ug/l) <2 <2 <2 <2 <2 <2 <2 <2
NASSAU COUNTY DEPARTMENT OF HEALTH
BUREAU OF ENVIRONMENTAL PROTECTION
WATER QUALITY MONITORING PROGRAM TO DETECT PESTICIDE CONTAMINATION
IN GROUNDWATERS OF NASSAU AND SUFFOLK COUNTIES
NASSAU COUNTY PUBLIC SUPPLY WELLS - 2001 DATA SUMMARY
WATER SYSTEM Town of Hemp.WS Town of Hemp.WS West. Nassau WA West. Nassau WA West. Nassau WA W. Nassau WA W.Nassau WA West.Nassau WA
WELL NO. N-8956 N-8957 N-14 N-4077 N-4077 N-5155 N-2414 N-7650
DEPTH (ft.) 530 584 110 150 150 90 88 440
AQUIFER Magothy Magothy Glacial Glacial Glacial Glacial Glacial Magothy
SAMPLE DATE 1/9/2002 1/9/2002 7/9/2001 7/9/2001 11/30/2001 7/9/2001 7/9/2001 10/2/2001
SEMI-VOLATILE                
PESTICIDES (ug/l) ND ND ND Prometon(.12) Prometon(.15) ND ND ND
CHLORINATED                
PESTICIDES (ug/l) ND   ND ND ND ND ND ND
EDB/DBCP (ug/l) ND ND ND ND ND ND ND ND
CARBAMATE                
PESTICIDES (ug/l) ND ND ND ND ND ND ND ND
TCPA (ug/l) ND ND ND ND ND ND ND ND
HERBICIDE                
METABOLITES (ug/l) ND ND ND ND ND ND ND ND
  1,1-DCE (11) 1,1,1-TCA (2)           Vinyl Cl2 (1)
  1,1,1-TCA(9) TCE (46)           TCE (25)
  Car. Tetra (14) PCE (7)           PCE (5)
VOLATILE TCE (53) cis12-DCE (1)           cis12-DCE(3)
ORGANICS (ug/l) PCE (17) 1,1-DCE (3) MTBE (1) MTBE (0.7) ND MTBE (0.7) ND 1,1-DCA (.8)
METALS  (ug/l)              
ALUMINUM <5 <5 17.3 <5 <5 <5 <5 <5
ANTIMONY <1 <1 <1 <1 <1 <1 <1 <1
ARSENIC <2 <2 <2 <2 <2 <2 <2 <2
BARIUM 14 3.7 81.6 20.6 62 37.5 32.4 4.4
BERYLLIUM <1 <1 <1 <1 <1 <1 <1 <1
CADMIUM <1 <1 <1 <1 <1 <1 <1 <1
CHROMIUM <1 <1 3.9 2.7 2.4 1.9 2 5.7
COBALT <1 <1 <1 3.1 <1 <1 <1 <1
NASSAU COUNTY DEPARTMENT OF HEALTH
BUREAU OF ENVIRONMENTAL PROTECTION
WATER QUALITY MONITORING PROGRAM TO DETECT PESTICIDE CONTAMINATION
IN GROUNDWATERS OF NASSAU AND SUFFOLK COUNTIES
NASSAU COUNTY PUBLIC SUPPLY WELLS - 2001 DATA SUMMARY
WATER SYSTEM Town of Hemp.WS Town of Hemp.WS West. Nassau WA West. Nassau WA West. Nassau WA W. Nassau WA W.Nassau WA West.Nassau WA
WELL NO. N-8956 N-8957 N-14 N-4077 N-4077 N-5155 N-2414 N-7650
COPPER 16.2 8.4 28.4 6.1 7.8 69.9 49.6 5.7
IRON  (mg/l) <0.1 <0.1 0.24 <0.1 <0.1 <0.1 <0.1 <0.1
LEAD 1.4 <1 <1 <1 <1 3.9 <1 <1
MANGANESE <1 <1 8.1 113 1130 2 2 1.6
MERCURY <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4
MOLYBDENUM 1 <1 <1 <1 <1 <1 <1 <1
NICKEL <1 <1 3.8 1.1 1.1 2.8 1.5 2.6
SELENIUM <2 <2 <2 <2 <2 <2 <2 <2
SILVER <5 <5 <5 <5 <5 <5 <5 <5
SODIUM  (mg/l) 10.6 5.7 34.1 33.3 51 18 12.7 17.5
THALLIUM <1 <1 <1 <1 <1 <1 <1 <1
THORIUM <1 <1 <1 <1 <1 <1 <1 <1
TITANIUM <1 <1 1.7 <1 <1 <1 <1 1
VANADIUM <1 <1 <1 1 1 <1 <1 1.3
ZINC <50 <50 69.2 <50 <50 <50 <50 <50
INORGANICS (mg/l)  
AMMONIA <0.02 <0.02 <0.02 0.28 0.51 <0.02 <0.02 <0.02
BROMIDE <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2
CHLORIDE 17 9 63 51 129 30 19  
CONDUCTIVITY 138 63 376 251 429 228 167 -
FLUORIDE <.2 <.2 <.2 <.2 <.2 - <.2 <.2
NITRATE 7.4 2.4 5.7 <0.2 <0.2 4.9 3.5 3.7
NITRITE <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02
O - PHOSPHATE <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1
PH 5.7 6.0 6.0 6.5 6.3 6.3 6.0 -
SULFATE <4 <4 40 <4 4 26 22  
PERCHLORATE (ug/l) 6 2 <2 <2 - <2 <2 <2
NASSAU COUNTY DEPARTMENT OF HEALTH
BUREAU OF ENVIRONMENTAL PROTECTION
WATER QUALITY MONITORING PROGRAM TO DETECT PESTICIDE CONTAMINATION
IN GROUNDWATERS OF NASSAU AND SUFFOLK COUNTIES
NASSAU COUNTY PUBLIC SUPPLY WELLS - 2001 DATA SUMMARY
WATER SYSTEM West. Nassau WA West. Nassau WA West Hemp. WD West Hemp. WD West Hemp. WD
WELL NO. N-7649 N-4298 N-3704 N-10401 N-9492
DEPTH (ft.) 340 395 159 615 595
AQUIFER Magothy Magothy Magothy Magothy Magothy
SAMPLE DATE 10/2/2001 11/30/2001 10/3/2001 10/3/2001 10/3/2001
SEMI-VOLATILE          
PESTICIDES (ug/l) ND ND Atrazine (.19) ND ND
CHLORINATED          
PESTICIDES (ug/l) ND   ND ND ND
EDB/DBCP (ug/l) ND ND ND ND ND
CARBAMATE          
PESTICIDES (ug/l) ND ND ND ND ND
TCPA (ug/l) ND ND 6 7 ND
HERBICIDE          
METABOLITES (ug/l) ND ND ND ND ND
  TCE (130) CDFM (1)      
  PCE (32) 1,1,1-TCA (1)   Chloroform(1)  
  cis12-DCE(11) TCE (8) CDFM (1) CDBM (1)  
VOLATILE 1,1-DCE (8) PCE (26) Chloroform(3) Bromoform (.5)  
ORGANICS (ug/l) MTBE (0.9) MTBE (0.5) PCE (2) BDCM (1) ND
METALS  (ug/l)        
ALUMINUM <5 <5 127 8.3 154
ANTIMONY <1 <1 <1 <1 <1
ARSENIC <2 <2 <2 <2 <2
BARIUM 4.2 23.7 53.4 37.4 1.3
BERYLLIUM <1 <1 <1 <1 <1
CADMIUM <1 <1 <1 <1 <1
CHROMIUM 6.1 2.5 2.9 1.6 1.9
COBALT <1 <1 5.6 3.4 1.9
NASSAU COUNTY DEPARTMENT OF HEALTH
BUREAU OF ENVIRONMENTAL PROTECTION
WATER QUALITY MONITORING PROGRAM TO DETECT PESTICIDE CONTAMINATION
IN GROUNDWATERS OF NASSAU AND SUFFOLK COUNTIES
NASSAU COUNTY PUBLIC SUPPLY WELLS - 2001 DATA SUMMARY
WATER SYSTEM West. Nassau WA West. Nassau WA West Hemp. WD West Hemp. WD West Hemp. WD
WELL NO. N-7649 N-4298 N-3704 N-10401 N-9492
COPPER 13.9 14.1 11.2 3.1 20.7
IRON  (mg/l) <0.1 <0.1 1.53 0.1 0.78
LEAD <1 <1 1.4 <1 2.3
MANGANESE 2.5 1.8 86.9 17.4 24.7
MERCURY <0.4 <0.4 <0.4 <0.4 <0.4
MOLYBDENUM <1 <1 <1 <1 <1
NICKEL 2 <1 6.7 9.9 2.8
SELENIUM <2 <2 <2 <2 <2
SILVER <5 <5 <5 <5 <5
SODIUM  (mg/l) 20.3 22 13.7 18.4 4
THALLIUM <1 <1 <1 <1 <1
THORIUM <1 <1 <1 <1 <1
TITANIUM <1 <1 3.3 1.7 4.3
VANADIUM 1.4 <1 1.1 <1 <1
ZINC <50 <50 <50 <50 <50
INORGANICS (mg/l)
AMMONIA <0.02 <0.02 <0.02 <0.02 <0.02
BROMIDE <0.2 <0.2 <0.2 <0.2 <0.2
CHLORIDE   41      
CONDUCTIVITY 252    
FLUORIDE <.2 <.2 <.2 <.2 <.2
NITRATE 3.7      
NITRITE <0.02 <0.02      
O - PHOSPHATE <0.1 <0.1 <0.1 <0.1 <0.1
PH   5.9      
SULFATE 19    
PERCHLORATE (ug/l)   -